EP 2642483 A3 20131030 - Extracting features of video&audio signal content to provide reliable identification of the signals
Title (en)
Extracting features of video&audio signal content to provide reliable identification of the signals
Title (de)
Extraktion von Merkmalen von Video- und Audiosignalinhalt zur zuverlässigen Identifizierung der Signale
Title (fr)
Extraction de particularités d'un contenu de signal vidéo et audio pour fournir une identification fiable de signaux
Publication
Application
Priority
- US 87209006 P 20061130
- EP 07867605 A 20071129
Abstract (en)
[origin: WO2008066930A2] Signatures that can be used to identify video and audio content are generated from the content by generating measures of dissimilarity between features of corresponding groups of pixels in frames of video content and by generating low-resolution time-frequency representations of audio segments. The signatures are generated by applying a hash function to intermediate values derived from the measures of dissimilarity and to the low-resolution time-frequency representations. The generated signatures may be used in a variety of applications such as restoring synchronization between video and audio content streams and identifying copies of original video and audio content. The generated signatures can provide reliable identifications despite intentional and unintentional modifications to the content.
IPC 8 full level
G10L 25/54 (2013.01); G10L 19/018 (2013.01); G06F 17/30 (2006.01); G06T 1/00 (2006.01)
CPC (source: EP US)
G06F 16/683 (2018.12 - EP US); G06F 16/7834 (2018.12 - EP US); G06F 16/7847 (2018.12 - EP US); G06T 1/0028 (2013.01 - EP US); G06T 1/005 (2013.01 - EP US); G06V 20/46 (2022.01 - EP US); G06V 20/48 (2022.01 - EP US); G10L 25/54 (2013.01 - EP US); G10L 25/18 (2013.01 - EP US); G11B 2020/10537 (2013.01 - EP US)
Citation (search report)
- [XP] REGUNATHAN RADHAKRISHNAN ET AL: "Audio Signature Extraction Based on Projections of Spectrograms", MULTIMEDIA AND EXPO, 2007 IEEE INTERNATIONAL CONFERENCE ON, IEEE, PI, 2 July 2007 (2007-07-02) - 5 July 2007 (2007-07-05), pages 2110 - 2113, XP031124074, ISBN: 978-1-4244-1016-3
- [A] SUPANGKAT S H ET AL: "A public key signature for authentication in telephone", CIRCUITS AND SYSTEMS, 2002. APCCAS '02. 2002 ASIA-PACIFIC CONFERENCE O N OCT. 28-31, 2002, PISCATAWAY, NJ, USA,IEEE, vol. 2, 28 October 2002 (2002-10-28), pages 495 - 498, XP010620871, ISBN: 978-0-7803-7690-8
- [A] MIHÇAK M K ET AL: "A Perceptual Audio Hashing Algorithm: A Tool for Robust Audio Identification and Information Hiding", LECTURE NOTES IN COMPUTER SCIENCE, SPRINGER VERLAG, BERLIN, DE, vol. 2137, 1 January 2001 (2001-01-01), pages 51 - 65, XP002356506, ISSN: 0302-9743
- [A] OZER H ET AL: "Perceptual audio hashing functions", EURASIP JOURNAL ON APPLIED SIGNAL PROCESSING HINDAWI USA, vol. 2005, no. 12, 21 July 2005 (2005-07-21), pages 1780 - 1793, XP002487282, ISSN: 1110-8657
- [A] FRIDRICH J ET AL: "Robust hash functions for digital watermarking", PROCEEDINGS INTERNATIONAL CONFERENCE ON INFORMATION TECHNOLOGY:CODING AND COMPUTING, XX, XX, no. PR00540, 1 January 2000 (2000-01-01), pages 178 - 183, XP002474318
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008066930 A2 20080605; WO 2008066930 A3 20081009; CN 101548294 A 20090930; CN 101548294 B 20120627; EP 2126833 A2 20091202; EP 2642483 A2 20130925; EP 2642483 A3 20131030; EP 2642483 B1 20150107; JP 2010512057 A 20100415; JP 5060565 B2 20121031; TW 200833116 A 20080801; TW I442773 B 20140621; US 2009304082 A1 20091210; US 2013064416 A1 20130314; US 8259806 B2 20120904; US 8626504 B2 20140107
DOCDB simple family (application)
US 2007024744 W 20071129; CN 200780044083 A 20071129; EP 07867605 A 20071129; EP 13171236 A 20071129; JP 2009539366 A 20071129; TW 96145374 A 20071129; US 201213599992 A 20120830; US 31284007 A 20071129